ammonium nitrate is manufactured by the neutralization of nitric acid with ammonia : HNO3(aq) + NH3(aq) -> NH4NO3(aq)
And the definition of neutralization is that acid + base -> salt + "water"
However, no water forms when HNO3(aq) + NH3(aq)
Only form a salt: NH4NO3(aq)
Is that means the reaction is not a neutralization, only a acid-base reaction???
Thank you so much~~
F4. Chem (ammonium nitrate)
2010-04-12 12:14 am
回答 (2)
2010-04-24 10:38 pm
of course there is neutralization
coz: NH3 + water ---> NH4+ + OH-
NH4+ + OH- + HNO3 ---> NH4NO3 + H2O
coz: NH3 + water ---> NH4+ + OH-
NH4+ + OH- + HNO3 ---> NH4NO3 + H2O
2010-04-12 11:37 pm
It is a neutralization.
For ammonia type acid base neutralization, I can give you some advice.
Ammonia reacts with acid is very special and for writing equation, you need not to add water in the equation.
ie, HNO3 + NH3 = NH4NO3
You can see it is balanced equation already.
You may ask:
Why no need to add water?
(Have you learnt something about state symbol? I hope you have learnt that.)
Because ammonium compound is highly soluble in water. We write NH4NO3(aq)
where aq stands for aqueous state. So water is implied there.
2010-04-12 15:40:08 補充：
You don't have to worry too much as I am a F5 student and I have been doing a lot of past paper that HNO3 + NH3 = NH4NO3 is a correct equation. It is true according to HKEAA.
For ammonia type acid base neutralization, I can give you some advice.
Ammonia reacts with acid is very special and for writing equation, you need not to add water in the equation.
ie, HNO3 + NH3 = NH4NO3
You can see it is balanced equation already.
You may ask:
Why no need to add water?
(Have you learnt something about state symbol? I hope you have learnt that.)
Because ammonium compound is highly soluble in water. We write NH4NO3(aq)
where aq stands for aqueous state. So water is implied there.
2010-04-12 15:40:08 補充：
You don't have to worry too much as I am a F5 student and I have been doing a lot of past paper that HNO3 + NH3 = NH4NO3 is a correct equation. It is true according to HKEAA.
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